ENGINE CONTROL SYSTEMEC-521
< SERVICE INFORMATION > [MR18DE]
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*: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
If the engine speed is above 2,400 rpm under no load [for ex
ample, the shift lever position is P or N (A/T,
CVT), Neutral (M/T) and engine speed is over 2,400 rpm] fuel will be cut off after some time. The exact time
when the fuel is cut off varies based on engine speed.
Fuel cut will be operated until the engine speed reaches 1,500 rpm, then fuel cut will be cancelled.
NOTE:
This function is different from deceleration control listed under EC-517, "
Multiport Fuel Injection (MFI) Sys-
tem".
Revision: May 2010 2011 Versa
AUTOMATIC SPEED CONTROL DEVICE (ASCD)EC-523
< SERVICE INFORMATION > [MR18DE]
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DescriptionINFOID:0000000006341703
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set
vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric thro ttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE i ndicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE indicato r in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET indicator in combination meter illuminates.)
ACCELERATE OPERATION
If the RESUME/ACCELERATE switch is depressed during cruise control driving, increase the vehicle speed
until the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exis t, cruise operation will be canceled.
• CANCEL switch is pressed
• More than two switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
• Brake pedal is depressed
• Clutch pedal is depressed or gear position is changed to the neutral position (M/T models)
• Selector lever is changed to N, P, R position (A/T and CVT models)
• Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
• Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may blink slowly.
When the engine coolant temperature decreases to t he normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.
• Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
COAST OPERATION
Sensor Input signal to ECM ECM functionActuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator
Stop lamp switch
Brake pedal operation
ASCD clutch switch (M/T models) Clutch pedal operation
ASCD steering switch ASCD steering switch operation
Park/neutral position (PNP) signal Gear position
ABS actuator and electric unit (con-
trol unit) Vehicle speed*
Combination meter
TCM Powertrain revolution*
Revision: May 2010 2011 Versa
EC-524
< SERVICE INFORMATION >[MR18DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
When the SET/COAST switch is depressed during cruise
control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
RESUME OPERATION
When the RESUME/ACCELERATE switch is depressed after cancel operation other than depressing MAIN
switch is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition
must meet following conditions.
• Brake pedal is released.
• Clutch pedal is released (M/T models)
• Selector lever is in other than P and N positions (A/T and CVT models)
• Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)
Component DescriptionINFOID:0000000006341704
ASCD STEERING SWITCH
Refer to EC-925.
ASCD BRAKE SWITCH
Refer to EC-931 and EC-996.
ASCD CLUTCH SWITCH
Refer to EC-931 and EC-996.
STOP LAMP SWITCH
Refer to EC-931, EC-944and EC-996.
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EC-948, EC-952, EC-958and EC-963.
ASCD INDICATOR
Refer to EC-1004.
Revision: May 2010 2011 Versa
EC-544
< SERVICE INFORMATION >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
ECM
P0607 0607 —1 (CVT)
1 (A/T)
2 (M/T) ×
(CVT)
× (A/T)
— (M/T) B
EC-895
SENSOR POWER/CIRC P0643 0643 — 1 ×BEC-898
T/M RANGE SENSOR A P0705 0705 — 2 ×BAT- 9 0
(A/T)
CVT-62
(CVT)
FLUID TEMP SENSOR A*
9P0710 0710 — 2 (A/T)
1 (CVT) ×
BAT- 9 5
(A/T)
CVT-67
(CVT)
INPUT SPEED SENSOR A P0715 0715 — 2 ×BCVT-72
OUTPUT SPEED SENSOR*8P0720 0720 — 2 ×BAT- 1 0 0
(A/T)
CVT-76
(CVT)
ENGINE SPEED P0725 0725 — 2 ×BCVT-81
1GR INCORRECT RATIO*9P0731 0731 — 2 ×BAT- 1 0 9
2GR INCORRECT RATIO*9P0732 0732 — 2 ×BAT- 11 2
3GR INCORRECT RATIO*9P0733 0733 — 2 ×BAT- 11 5
4GR INCORRECT RATIO*9P0734 0734 — 2 ×BAT- 11 8
TORQUE CONVERTER P0740 0740 — 2 ×BAT- 1 2 3
(A/T)
CVT-84
(CVT)
TORQUE CONVERTER P0744 0744 — 2 ×BAT- 1 2 8
(A/T)
CVT-89
(CVT)
PC SOLENOID A P0745 0745 — 2 ×BAT- 1 3 3
(A/T)
CVT-91
(CVT)
PC SOLENOID A P0746 0746 — 1 ×BCVT-96
SHIFT SOLENOID A P0750 0750 — 1 ×BAT- 1 3 8
SHIFT SOLENOID B P0755 0755 — 1 ×BAT- 1 4 3
PC SOLENOID B P0776 0776 — 2 ×BCVT-98
PC SOLENOID B P0778 0778 — 2 ×BCVT-100
FLUID PRESS SEN/SW A P0840 0840 — 2 ×BCVT-105
P-N POS SW/CIRCUIT P0850 0850 — 2 ×BEC-903
C L O S E D L O O P - B 1 P 11 4 8 11 4 8 — 1 ×AEC-909
TCS C/U FUNCTN P1211 1211 — 2 — —EC-910
TCS/CIRC P1212 1212 — 2 — —EC-911
ENG OVER TEMP P1217 1217 — 1 ×BEC-912
CTP LEARNING-B1 P1225 1225 — 2 — —EC-921
CTP LEARNING-B1 P1226 1226 — 2 — —EC-923
ASCD SW P1564 1564 — 1 — —EC-925
ASCD BRAKE SW P1572 1572 — 1 — —EC-931
ASCD VHL SPD SEN P1574 1574 — 1 — —EC-940
LOCK MODE P1610 1610 — 2 — —BL-257
ID DISCORD,IMMU-ECM P1611 1611 — 2 — —BL-257
Items
(CONSULT-III screen terms) DTC*
1
SRT
code Trip MIL Permanent
DTC
group
*4Reference
CONSULT-III
GST*
2ECM*3
Revision: May 2010 2011 Versa
ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-545
< SERVICE INFORMATION > [MR18DE]
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*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012/ISO 15031-6.
*3: In Diagnostic Test Mode II
(Self-diagnostic results), this number is controlled by NISSAN.
*4: Refer to EC-542, "
Emission-related Diagnostic Information", “PERMANENT DIAGNOSTIC TROUBLE CODE (PERMANENT DTC)”.
*5: The troubleshooting for this DTC needs CONSULT-III.
*6: When the ECM in the mode of displaying SRT status, MIL may flash. For the details, refer to "How to Display SRT Status".
*7: SRT code will not be set if the self-diagnostic result is NG.
*8: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*9: When erasing this DTC, al ways use CONSULT-III or GST.
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously , and the 1st trip DTC did not recur, the 1st trip DTC
will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunc tion is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in t he ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. Fo r malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DT C from the ECM memory are described in "HOW TO
ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION".
CHAIN OF ECM-IMMU P1612 1612 — 2 — —BL-257
CHAIN OF IMMU-KEY P1614 1614 — 2 — —BL-257
DIFFERENCE OF KEY P1615 1615 — 2 — —BL-257
IN PULY SPEED P1715 1715 — 2 — —EC-942
(A/T)
EC-942
(CVT)
SLCT SOLENOID P1740 1740 — 2 ×BCVT-124
OVER CLUTCH SOLENOID P1760 1760 — 2 ×BAT- 1 4 8
STEP MOTOR P1777 1777 — 1 ×BCVT-129
STEP MOTOR P1778 1778 — 2 ×BCVT-133
BRAKE SW/CIRCUIT P1805 1805 — 2 — —EC-944
ETC MOT PWR-B1 P2100 2100 — 1 ×BEC-948
ETC FNCTN/CIRC-B1 P2101 2101 — 1 ×BEC-952
ETC MOT PWR P2103 2103 — 1 ×BEC-948
ETC MOT-B1 P2118 2118 — 1 ×BEC-958
ETC ACTR-B1 P2119 2119 — 1 ×BEC-963
APP SEN 1/CIRC P2122 2122 — 1 ×BEC-965
APP SEN 1/CIRC P2123 2123 — 1 ×BEC-965
APP SEN 2/CIRC P2127 2127 — 1 ×BEC-970
APP SEN 2/CIRC P2128 2128 — 1 ×BEC-970
TP SENSOR-B1 P2135 2135 — 1 ×BEC-977
APP SENSOR P2138 2138 — 1 ×BEC-982
A/F SENSOR1 (B1) P2A00 2A00 — 2 ×AEC-989
Items
(CONSULT-III screen terms) DTC*
1
SRT
code Trip MIL Permanent
DTC
group
*4Reference
CONSULT-III
GST*
2ECM*3
Revision: May 2010 2011 Versa
EC-546
< SERVICE INFORMATION >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
For malfunctions in which 1st trip DTCs are displa
yed, refer to "EMISSION-RELATED DIAGNOSTIC INFOR-
MATION ITEMS". These items are required by legal regulations to continuously monitor the system/compo-
nent. In addition, the items monitored non-cont inuously are also displayed on CONSULT-III.
1st trip DTC is specified in Service $07 of SAE J1979/ ISO 15031-5. 1st trip DTC detection occurs without light-
ing up the MIL and therefore does not warn the driver of a malfunction. However, 1st trip DTC detection will not
prevent the vehicle from being tested, for example during Inspection/Maintenance (I/M) tests.
When a 1st trip DTC is detected, check, print out or write down and erase (1st trip) DTC and Freeze Frame
data as specified in Work Flow procedure Step 2, refer to EC-585, "
Trouble Diagnosis Introduction". Then per-
form DTC Confirmation Procedure or Overall Function Check to try to duplicate the malfunction. If the mal-
function is duplicated, the item requires repair.
How to Read DTC and 1st Trip DTC
DTC and 1st trip DTC can be read by the following methods.
WITH CONSULT-III
WITH GST
CONSULT-III or GST (Generic Scan Tool ) Examples: P0340, P0850, P1148, etc.
These DTCs are prescribed by SAE J2012/ISO 15031-6.
(CONSULT-III also displays the malfunctioning component or system.)
NO TOOLS
The number of blinks of the MIL in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 0850, 1148, etc.
These DTCs are controlled by NISSAN.
• 1st trip DTC No. is the same as DTC No.
• Output of a DTC indicates a malfunct ion. However, GST and the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or h as occurred in the past and has returned to nor-
mal. CONSULT-III can identify ma lfunction status as shown below. Therefore, using CONSULT-III (if
available) is recommended.
DTC or 1st trip DTC of a malfunction is display ed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-III.
Time data indicates how many times the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be [0].
If a 1st trip DTC is stored in t he ECM, the time data will be [1t].
FREEZE FRAME DATA AND 1ST TRIP FREEZE FRAME DATA
The ECM records the driving conditions such as fuel system status, calculated load value, engine coolant tem-
perature, short term fuel trim, long term fuel trim, engine speed, vehicle speed, absolute throttle position, base
fuel schedule and intake air temperature at the moment a malfunction is detected.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data.
The data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-III or
GST. The 1st trip freeze frame data can only be disp layed on the CONSULT-III screen, not on the GST. For
details, see EC-612, "
CONSULT-III Function (ENGINE)".
Only one set of freeze frame data (either 1st trip freez e frame data or freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no priority
for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MIL on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM. The ECM has the fol-
lowing priorities to update the data.
For example, the EGR malfunction (Priority: 2) was detected and the fr eeze frame data was stored in the 2nd
trip. After that when the misfire (Priority: 1) is detected in another trip, the freeze frame data will be updated
from the EGR malfunction to the misfire. The 1st trip freeze frame data is updated each time a different mal-
function is detected. There is no priority for 1st trip freeze frame data. However, once freeze frame data is
stored in the ECM memory, 1st trip freeze data is no longer stored (because only one freeze frame data or 1st
trip freeze frame data can be stored in the ECM). If fr eeze frame data is stored in the ECM memory and freeze
frame data with the same priority occurs later, t he first (original) freeze frame data remains unchanged in the
ECM memory.
Priority Items
1 Freeze frame data Misfire — DTC: P0300 - P0304
Fuel Injection System Function — DTC: P0171, P0172
2 Except the above items (Includes A/T or CVT related items)
3 1st trip freeze frame data
Revision: May 2010 2011 Versa
EC-552
< SERVICE INFORMATION >[MR18DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
• Sea level
• Flat road
• Ambient air temperature: 20 - 30
°C (68 - 86° F)
• Diagnosis is performed as quickly as possible under normal conditions.
Under different conditions [For example: ambient air temperature other than 20 - 30 °C (68 - 86 °F)], diagno-
sis may also be performed.
Pattern 1:
• The engine is started at the engine coolant temperature of −10 to 35 °C (14 to 95 °F)
(where the voltage between the ECM te rminal 38 and ground is 3.0 - 4.3 V).
• The engine must be operated at idle speed until the engine coolant temper ature is greater than 70°C
(158° F) (where the voltage between the ECM termi nal 38 and ground is lower than 1.4 V).
• The engine is started at the fuel tank temperature of warmer than 0° C (32°F) (where the voltage
between the ECM terminal 43 and ground is less than 4.1 V).
Pattern 2:
• When steady-state driving is performed again even after it is interrupted, each diagnosis can be conducted. In this case, the time required for diagnosis may be extended.
Pattern 3:
• Operate vehicle following the driving pattern shown in the figure.
• Release the accelerator pedal during decelerating vehicle speed from 90 km/h (56 MPH) to 0 km/h (0 MPH).
Pattern 4:
• Operate vehicle, following the driving pattern shown in the figure.
- Drive the vehicle in a proper gear at 60 km/h (38 MPH) and main- tain the speed.
- Release the accelerator pedal fully at least 5 seconds.
- Repeat the above two steps at least 5 times.
Pattern 5:
• The accelerator pedal must be held very steady during steady-state driving.
• If the accelerator pedal is moved, t he test must be conducted all over again.
*1: Depress the accelerator pedal until vehicle speed is 90 km/h (56 MPH), then release the accelerator pedal
and keep it released for more than 10 seconds. Depress the accelerator pedal until vehicle speed is 90 km/h
(56 MPH) again.
*2: Checking the vehicle speed with GST is advised.
Suggested Transmission Gear Po sition for A/T and CVT Models
Set the selector lever in the D position.
Suggested upshift speeds for M/T models
Shown below are suggested vehicle speeds for shifting into a higher gear. These suggestions relate to fuel
economy and vehicle performance. Actual upshift speeds will vary according to road conditions, the weather
and individual driving habits.
PBIB2244E
JSBIA0160GB
Revision: May 2010 2011 Versa
ON BOARD DIAGNOSTIC (OBD) SYSTEMEC-561
< SERVICE INFORMATION > [MR18DE]
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HOW TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION
How to Erase DTC
With CONSULT-III
NOTE:
• If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10 seconds and then turn it ON (engine stopped) again.
• If the DTC is not for A/T or CVT related items (see EC-504
), skip step 1.
1. Erase DTC in TCM.
2. Select "ENGINE" with CONSULT-III.
3. Select "SELF-DIAG RESULTS".
MISFIRE A2H No. 1 Cylinder Misfire
P0301 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0301 0CH 24H Misfire counts for last/current driving cy-
cles
A3H No. 2 Cylinder Misfire P0302 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0302 0CH 24H Misfire counts for last/current driving cy-
cles
A4H No. 3 Cylinder Misfire P0303 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0303 0CH 24H Misfire counts for last/current driving cy-
cles
A5H No. 4 Cylinder Misfire P0304 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0304 0CH 24H Misfire counts for last/current driving cy-
cles
A6H No. 5 Cylinder Misfire P0305 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0305 0CH 24H Misfire counts for last/current driving cy-
cles
A7H No. 6 Cylinder Misfire P0306 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0306 0CH 24H Misfire counts for last/current driving cy-
cles
A8H No. 7 Cylinder Misfire P0307 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0307 0CH 24H Misfire counts for last/current driving cy-
cles
A9H No. 8 Cylinder Misfire P0308 0BH 24H
EWMA (Exponential Weighted Moving
Average) misfire counts for last 10 driv-
ing cycles
P0308 0CH 24H Misfire counts for last/current driving cy-
cles
Item
OBD-
MID Self-diagnostic test item
DTCTest value and Test
limit
(GST display) Description
TID Unit and
Scaling ID
Revision: May 2010 2011 Versa